There is a new way to play FourSquare, the location-sharing game that just celebrated its first birthday. Kickball is an iPhone app that uses the FourSquare API (our FourSquare API profile) to let users check-in or see their friends. But it adds a few features that may have you leaving behind the flagship app that first made FourSquare so popular.

The InData Labs Text Analysis API is used to analyze text data from social media and detect sentiment to identify positive or negative opinions, gender, age from groups of people, language of phrases...